査証: visa / 詐称: misrepresentation, false statement

the time to do something, trouble of doing it

世子, 世嗣: an heir, a successor / 正史: correct or authentic history / 正矢: in traditional Japanese trigonometry, the difference between one and the cosine of a given angle / 正使: a central or main messenger

(historical) the son of a duke in China or Vietnam; compare 王子 (son of a king) and 皇子 (son of an emperor)